US bans Mexican livestock to stop screwworm fly

The United States has halted livestock imports from northern Mexico due to the New World Screwworm fly, a parasitic insect threatening animal health. This action aims to prevent the fly's entry and protect the American cattle industry. The New World Screwworm fly lays eggs in animal wounds, and its larvae consume living flesh, causing severe damage. The USDA is responding with a ban on imports, border controls, and a revival of the sterile fly release program to combat the infestation. The US previously eradicated the screwworm using sterile insect techniques, but its resurgence in Mexico has prompted renewed efforts. The USDA is investing in new facilities and aerial release programs to contain the fly and prevent economic losses.